Which e-commerce protocol is defined as the interorganization exchange of documents in standardized electronic form directly between participating computers?

Which e-commerce protocol is defined as the interorganization exchange of documents in
standardized electronic form directly between participating computers?

A.
Secure Electronic Transactions (SET)

B.
Electronic Data Interchange (EDI)

C.
Hypertext Transfer Protocol (HTTP)

D.
Open Buying on the Internet (OBI)